UFR 1-06 Best Practice Advice: Difference between revisions

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<ul>
<ul>
<li>The flow can be treated as axisymmetric.</li>  
<li>The flow can be treated as axisymmetric.</li>  


<li>For a grid-independent resolution of the George&nbsp;''et al.''
<li>For a grid-independent resolution of the George&nbsp;''et al.''
Line 30: Line 29:
should be used in the (radial&nbsp;&times;&nbsp;axial) directions. At least
should be used in the (radial&nbsp;&times;&nbsp;axial) directions. At least
10 nodes should be used radially to resolve the plume source.</li>
10 nodes should be used radially to resolve the plume source.</li>


<li>Discretization schemes should be at least second-order accurate.</li>
<li>Discretization schemes should be at least second-order accurate.</li>


<li>For further advice on boundary conditions, see Section 3.4.3.</li>
<li>For further advice on boundary conditions, see Section 3.4.3.</li>

Revision as of 15:04, 30 March 2010


Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References

Axisymmetric buoyant far-field plume in a quiescent unstratified environment

Underlying Flow Regime 1-06


Best Practice Advice

Best Practice Advice for the UFR

Key Physics

The key physics to be captured in this UFR is the self-similar behaviour of a spreading axisymmetric buoyant plume.

Numerical Modelling Issues

  • The flow can be treated as axisymmetric.
  • For a grid-independent resolution of the George et al. plume, at least (40 × 100) grid nodes should be used in the (radial × axial) directions. At least 10 nodes should be used radially to resolve the plume source.
  • Discretization schemes should be at least second-order accurate.
  • For further advice on boundary conditions, see Section 3.4.3.

Computational Domain and Boundary Conditions

Physical Modelling

Application Uncertainties

Recommendations for further work

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References


Contributed by: Simon Gant — Lea Associates

© copyright ERCOFTAC 2010